BIOSIGNALS

Biosignals are measurable parameters of the human body over time. Various non-invasive methods are available for research.

  • Measurement of electrical activity: These include Brain, Heart, Muscles.

  • Measurement of eye movements and pupils: Eye movements are determined using eye-tracking technologies, which usually also measure pupil diameter.

  • Optical measurement methods: Using NIRS: infrared spectroscopy, the oxygen saturation of the blood can be determined optically.

  • Other procedures: Special procedures can be used to extract facial expressions and thus the current emotional state of the subject.

Research on the electrical activity of the brain began in 1924. The phenomenon of the so-called …

EEG

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Traditionally, eye tracking is used in market research to evaluate campaigns of various kinds. …

Facial-expression recognition aims to automatically detect micro-expressions, that is, facial …

Galvanic skin response (GSR), also known as electrodermal activity (EDA), indicates the electrical …

GSR

Strong emotions lead to an increased pulse rate; thus, this biometric measure is certainly the best …

Unlike EEG, near-infrared spectroscopy (NIRS) is a relatively new technology. Using infrared light, …

Biosignals are measurable parameters of the human body over time. Various non-invasive methods are …

A correlation between pupil diameter and mental workload has been known since the 1970s.